Replicates the essential features of any pipe, theatre, or reed organ. GENPO reads a description of an organ (from a XML file) and presents a GUI for operating that organ. You must supply your own organ waveforms

These apps mimic “drum machines”. If described as a “sampler”, this means the sounds are sampled waveforms of real drums. If described as a “synth”, this means the sounds are synthesized via oscillators (like the analog Roland TR-808), or physical modeling.

If described as “MIDI-controlled”, this means the sounds are playable in real-time via a MIDI controller such as drum pads or a keyboard (or another MIDI app if the ALSA Sequencer interface is supported). If “Pattern-controlled”, then the app requires you to program “beat patterns”, and the app plays these patterns at whatever tempo you set.